Improvement in mining-lanterns



c. B. snowm Mining Lanterns.

No .l54,83l.

Patented Sept. 8,1874.

UNITED STATES PATENT Orron.

GOOLIDGE B. BROWN, OF PLAOERVILLE, CALIFORNIA.

IMPROVEMENT IN MlNlNG-LANTERNS.

Specification forming part of Letters Patent No. 154,831, dated September 8, 1874; application filed December 22, 1873.

To all whom it may concern:

Be it known that I, OOOLIDGE B. BRowN, of Placerville, El Dorado county, State of California, have invented a Mining -Lamp; and I do hereby declare the following description and accompanying drawings are suflicient to enable any person skilled in the art or science to which it most nearly appertains to make and use my said invention without further invention or experiment.

My invention relates to a lamp which is especially adapted for furnishing a light in bydraulic mines, where it is necessary during the night-time to light up the face of a bank in order that the miners may see their work; and it consists in the construction and arrangement of an oil-reservoir, as more fully hereinafter described.

My improved lamp I call the hydraulic mining-lamp.

Heretofore hydraulic claims have been lighted up during the night by making a bonfire of cord-wood, at heavy expense, and without furnishing a controllable light.

In the drawings, Figure 1 is a perspective view of my lamp. Fig. 2 is a sectional elevation.

. Ais a conical or tapering lamp-body, which is mounted horizontally upon a stand or box, B. The interior surface of the conical body A is providedwith a reflecting surface, as shown, while a box, 0, is constructed at its rear or smaller end, in which I place a focal reflector, D, as hereinafter described. Inside of the bodyA I make a floor, E, in a line with the bottom of the focal reflector, so that an open space will be provided between the floor and lower portion of the body. A door, F, serves to close the front or large end of the body. The burner Gr passes directly up through the middle of the floor, as shown, while a chimney or turret,H, on top of the lamp-body and directly over the lamp, serves to provide a draft and allow the heated air to pass out. I prefer to use a gasoline vaporburner; but any desired style of burner may be used. I is the fountain which contains the oil or supply of fuel for the burner. This fountain I construct in the manner of a tube or cylinder, and dispose it around outside of the body A horizontally, as shown, and connect it with the burner by a pipe, J. The stand B, upon which the body A is supported, is provided with one or more openings, K K K, upon each of its four sides, and

each of these openings is provided with a small door, which can be shut down over the opening when desired. These openings serve to admit air into the stand or box B below the lamp. A tube, L, extends from inside this .box or stand up through the bottom of the body, so as to supply the air to the space between the body and floor, whence it can pass up through the tube M, which surrounds the burner in the lamp. end of the tube L is provided with a damper, N, so that the amount of air to be admitted into the lamp can be regulated as desired. Small holes are also made through the floor E, near the front of the lamp, so that cold air will pass upward between the front glass door and burner, and thus prevent the glass from being overheated. The frame of the door F is hollow, and is provided with two thicknesses of glass, one of which is secured in front and the other in the rear, so that a space will be left between them. Holes n n n are made in the hollow frame of the door above and below, so that a circulation of air can be kept up between the two glasses, and thus keep them cool.

By constructing the glass doors in this manner, the sections or pieces will expand separately and independently, and thus avoid breakage.

In front of the focal reflector D I also place a glass partition, 19, so that the reflector (when a glass reflector is used) will not be affected by the heat.

. The box 0 is provided with holes 1 1" upon opposite sides, so that a circulation of air can be maintained between the glass partition 12 and reflector.

In the rear of the lantern above described I mount a small swiveling lantern, S, which is supplied with oil, from the same fountain which supplies the main burner, by a pipe, t, which connects it with the fountain. This supplemental swiveling lantern is for the purpose of furnishing a light in rear of the main The lower lantern, as the miners frequently require to go to the rear to avoid a cave, and for other purposes.

When the lamp is set in position and lighted, the door which covers the opening K on the side opposite to the one exposed-to the force of the wind is opened, and as often as the wind changes its direction these openings are regulated accordingly, always supplying the ventilation on the side opposite the wind, so that a uniform draft is preserved, no difference how strong the wind blows.

I claim- I In a lamp. for mining purposes, the reservoir I, extending on each side of the casing A, in combination with the pipe J, leading to and supplying the main burner, and provided with the branch t, which leads to and supplies the auxiliary lamp S, substantially as and for the purpose set forth.

In witness whereof I hereunto set my hand and seal.

OOOLIDGE B. BROWN. [L. s] Witnesses:

J. L. BOONE, O. MlL'roiv RICHARDSON. 

